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Title: Plasma mixing glow discharge device for analytical applications

Abstract

An instrument for analyzing a sample has an enclosure that forms a chamber containing an anode which divides the chamber into a discharge region and an analysis region. A gas inlet and outlet are provided to introduce and exhaust a rare gas into the discharge region. A cathode within the discharge region has a plurality of pins projecting in a geometric pattern toward the anode for exciting the gas and producing a plasma discharge between the cathode and the anode. Low energy electrons (e.g. <0.5 eV) pass into the analysis region through an aperture. The sample to be analyzed is placed into the analysis region and bombarded by the metastable rare gas atoms and the low energy electrons extracted into from the discharge region. A mass or optical spectrometer can be coupled to a port of the analysis region to analyze the resulting ions and light emission. 3 figs.

Inventors:
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
350317
Patent Number(s):
5896196
Application Number:
PAN: 8-912,907
Assignee:
Lockheed Martin Energy Research Corp., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 20 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; ELECTROCHEMICAL CELLS; DESIGN; CHEMICAL ANALYSIS; EXCITATION; MASS SPECTROMETERS; OPTICAL SPECTROMETERS; SAMPLE PREPARATION; IONIZED GASES

Citation Formats

Pinnaduwage, L A. Plasma mixing glow discharge device for analytical applications. United States: N. p., 1999. Web.
Pinnaduwage, L A. Plasma mixing glow discharge device for analytical applications. United States.
Pinnaduwage, L A. Tue . "Plasma mixing glow discharge device for analytical applications". United States.
@article{osti_350317,
title = {Plasma mixing glow discharge device for analytical applications},
author = {Pinnaduwage, L A},
abstractNote = {An instrument for analyzing a sample has an enclosure that forms a chamber containing an anode which divides the chamber into a discharge region and an analysis region. A gas inlet and outlet are provided to introduce and exhaust a rare gas into the discharge region. A cathode within the discharge region has a plurality of pins projecting in a geometric pattern toward the anode for exciting the gas and producing a plasma discharge between the cathode and the anode. Low energy electrons (e.g. <0.5 eV) pass into the analysis region through an aperture. The sample to be analyzed is placed into the analysis region and bombarded by the metastable rare gas atoms and the low energy electrons extracted into from the discharge region. A mass or optical spectrometer can be coupled to a port of the analysis region to analyze the resulting ions and light emission. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}